XML DOMDocument->load not working

I am getting an error message:

Line 14 is this line:

$doc->load($configFilePath);

Code (markup):

Full Code of file xmlDOMDocHandler.php:

<?php
$skip = true;
$user="";
if(isset($_SESSION['loggedOn']) && $_SESSION['loggedOn'] == "true"){
$skip = false;
$user=$_SESSION['username'];
}
$configFilePath = 'users/'.$user.'/config.xml' . rand(1,10000);
$doc = new DOMDocument();
$doc->preserveWhiteSpace = false;
//Functions------------------------------------------
function loadXML(){
if($skip){return;}
$doc->load($configFilePath);
}
function setSiteName($newName){
if($skip){return;}
loadXML();
$doc->getElementsByTagName('websitename')->nodeValue = $newName;
$doc->save($configFilePath);
}
function getSiteName(){
if($skip){return;}
loadXML();
return $doc->getElementsByTagName('websitename')->nodeValue;
}
loadXML();
?>

Code (markup):

The above file is being included in another file called index.php within an If..Statement. I didn't understand the error message so I was playing around with the code trying to get it to work, that's why it may seem as if I just complicated it too much... (e.g. I don't really need the $skip variable and a few other things)..

Why am I getting the error message? When I tried replacing this code:

$doc = new DOMDocument();

Code (markup):

with

$doc = DOMDocument::load($configFilePath);

Code (markup):

it worked... except the next function, the $doc->getElementsByTagName... returned the same error message.. It's like the method doesn't exist, except I know it exists, I've used it before.

 

Hey there,
From what I see you are declaring the $doc variable as a new domdocument and then trying to call it from within a function. To do this you need to pass in the variable or move the declaration. In your case i would pass the variable in as a parameter. Example:

<?php
$skip = true;
$user="";
if(isset($_SESSION['loggedOn']) && $_SESSION['loggedOn'] == "true"){
$skip = false;
$user=$_SESSION['username'];
}
$configFilePath = 'users/'.$user.'/config.xml' . rand(1,10000);
$doc = new DOMDocument();
$doc->preserveWhiteSpace = false;
//Functions------------------------------------------
function loadXML($skip, $doc){
if($skip){return;}
$doc->load($configFilePath);
}
function setSiteName($newName, $skip, $doc){
if($skip){return;}
loadXML($skip, $doc);
$doc->getElementsByTagName('websitename')->nodeValue = $newName;
$doc->save($configFilePath);
}
function getSiteName($skip, $doc){
if($skip){return;}
loadXML($skip, $doc);
return $doc->getElementsByTagName('websitename')->nodeValue;
}
loadXML($skip, $doc);
?>

PHP:

 

Thanks, I didn't realize that variables declared in the main scope couldn't be accessed from the scope of a function.